I started Wikipeding in April 2010 by expanding a stub related to a village in North Lincolnshire (Alkborough). This is an ongoing project. However, my main interest is in the Roman Empire, and specifically Hadrian's Wall. I'm currently involved in a little project-ette to create entries for each of the Milecastles along Hadrian's Wall. It takes much longer than you might think!
First impressions of Wikipeding? There's always more that you want to do, than time you have to do it.
As a new editor you may be wondering, "How can I help?" and be overwhelmed by the extent and scope of the entire Wikipedia project.
An introduction for new contributors is available at Help:Getting started which provides a self-guided road map of tutorials, introductions, training topics and other resources allowing you to learn more about how you can help improve the Wikipedia project.